EP0096260B1 - Liquids metering and distributing device for a washing machine - Google Patents

Liquids metering and distributing device for a washing machine Download PDF

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Publication number
EP0096260B1
EP0096260B1 EP83104970A EP83104970A EP0096260B1 EP 0096260 B1 EP0096260 B1 EP 0096260B1 EP 83104970 A EP83104970 A EP 83104970A EP 83104970 A EP83104970 A EP 83104970A EP 0096260 B1 EP0096260 B1 EP 0096260B1
Authority
EP
European Patent Office
Prior art keywords
chamber
metering
automatic valve
valve means
reservoir
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP83104970A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0096260A1 (en
Inventor
Piero Babuin
Giovanni Savian
Giuliano Sut
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Industrie Zanussi SpA
Original Assignee
Industrie Zanussi SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Industrie Zanussi SpA filed Critical Industrie Zanussi SpA
Priority to AT83104970T priority Critical patent/ATE21709T1/de
Publication of EP0096260A1 publication Critical patent/EP0096260A1/en
Application granted granted Critical
Publication of EP0096260B1 publication Critical patent/EP0096260B1/en
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/02—Devices for adding soap or other washing agents
    • D06F39/022—Devices for adding soap or other washing agents in a liquid state

Definitions

  • the invention relates to a liquid detergent and additive metering and distributing device for a washing machine, comprising a reservoir disposed in the lower portion of the machine and associated to at least one metering chamber, the connection between said reservoir and said chamber being adapted to be closed by automatic valve means, in dependency of the pressure difference between said reservoir and said chamber, said chamber being connected to the tub of the washing machine via a detergent powder distributor.
  • One compartment is connected to the tub of the washing machine, whilst the other is connected to the tub and to the water supply circuit, respectively so as to be intermittently filled and emptied for displacing metered quantities of the liquids towards the tub.
  • the operation of this known metering and distributing device is thus accomplished by means of hydraulically actuated control means.
  • the described device operates satisfactorily, it presents structural complications in that it requires a three-way valve and an additional conduit for the water supply as well as a hermetically closed separation by a diaphragm for providing the two separate compartments within the metering chamber. Said three-way valve and/or said diaphragm are liable to cause malfunctions due to wear during long-time use.
  • this embodiment does not allow for suitable utilization of the free jet section customarily required for safety reasons.
  • a device of the type as stated above which is characterized therein that the metering chamber is connected to an air chamber via a conduit, said air chamber being provided with automatic valve means and associated via an opening to a free jet section connected to the water supply circuit so that the automatic valve means being actuated by the water of the supply circuit, said automatic valve means comprising first automatic valve means adapted to establish communication between said air chamber and said metering chamber and with second automatic valve means adapted to establish communication between said air chamber and ambient atmosphere.
  • the drawing shows in diagrammatic form a conventional laundry washing machine comprising a washing tub 1, connected to which is the outlet of a detergent powder distributor 2 supplied with water from the water mains 3 through a solenoid valve 4, a free jet section 5 and a conduit 6.
  • At least one reservoir 7 for containing liquid detergents and additives Disposed in the lower portion of the machine is at least one reservoir 7 for containing liquid detergents and additives, said reservoir 7 containing a metering chamber 8.
  • the latter is connected to reservoir 7 through an automatic valve and is additionally connected to distributor 2 through a conduit 10.
  • Metering chamber 8 is further connected to an air chamber 13 associated with free jet section 5 through a further conduit 11 and an automatic valve 12. Air chamber 13 is also provided with an automatic venting valve 14.
  • valve 9 When the machine is at rest, or during operating phases which do not require the introduction of liquid detergents or additives into the tub, valve 9 is open, and metering chamber 8 is filled with a metered quantity of the liquid from reservoir 7. In this situation, air chamber 13 is not under pressure, and valves 12 and 14 are open. If it is required to introduce the metered liquid into the tub, the program unit (not shown) of the machine causes the water supply valve to be opened, so that the water from the water mains fills air chamber 13 via free jet section 5.
  • venting valve 14 The pressure generated thereby within air chamber 13 causes venting valve 14 to close instantly, so that the air contained in chamber 13 is displaced towards metering chamber 8 through valve 12 and conduit 11.
  • valve 9 causes valve 9 to close and the liquid contained in metering chamber 8 to be displaced towards washing tub 1 through conduit 10 and distributor 2.
  • valve 12 is closed by the hydraulic pressure to prevent the water from entering conduit 11 and flowing into metering chamber 8.
  • valves 12 and 14 open.
  • valve 9 This results in a partial vacuum within metering chamber 8, causing valve 9 to open so as to admit a further metered quantity of the liquid detergent or additive into chamber 8.
  • the metering of the liquid and the introduction thereof into the tub are thus accomplished by substantially pneumatic actuation, reducing to a minimum the number of components which are moreover of extreme simplicity and reliability.
  • the device according to the invention permits the eventual problem of regulating the metered quantities of liquids to be solved in a simple manner.
  • the immersion depth of conduit 10 into chamber 8 may be varied by employing a sliding sleeve 15 at the inflow end of conduit 10.
  • Sleeve 15 is vertically displaceable by means for instance of a pull rod 16 actuated by a lever or control knob 17 mounted at the front of the machine.
  • the device according to the invention thus accomplishes the stated objects and provides the additional advantage that the liquids employed may be metered with high accuracy independent of their density and viscosity.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Cleaning By Liquid Or Steam (AREA)
EP83104970A 1982-06-09 1983-05-19 Liquids metering and distributing device for a washing machine Expired EP0096260B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83104970T ATE21709T1 (de) 1982-06-09 1983-05-19 Dosier- und speisevorrichtung fuer waschmaschinen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8234023U IT8234023V0 (it) 1982-06-09 1982-06-09 Dispositivo dosatore distributore per macchina lavatrice.
IT3402382U 1982-06-09

Publications (2)

Publication Number Publication Date
EP0096260A1 EP0096260A1 (en) 1983-12-21
EP0096260B1 true EP0096260B1 (en) 1986-08-27

Family

ID=11238755

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83104970A Expired EP0096260B1 (en) 1982-06-09 1983-05-19 Liquids metering and distributing device for a washing machine

Country Status (4)

Country Link
EP (1) EP0096260B1 (it)
AT (1) ATE21709T1 (it)
DE (1) DE3365605D1 (it)
IT (1) IT8234023V0 (it)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3704296A1 (de) * 1987-02-12 1988-08-25 Bauknecht Hausgeraete Dosiereinrichtung fuer fluessigkeiten
DE3901686A1 (de) * 1989-01-21 1990-07-26 Miele & Cie Waschmaschine oder waschtrockner mit einer dosiereinrichtung
IT1241426B (it) * 1990-02-12 1994-01-17 Elbi Int Spa Sistema per l'alimentazione di acqua e di detersivo ad una macchina lavastoviglie.
EP1770379A1 (en) * 2005-09-29 2007-04-04 JohnsonDiversey, Inc. Device and method for detecting the presence of a gas in a liquid flow
PL2011913T3 (pl) * 2007-07-03 2011-11-30 Electrolux Home Products Corp Nv Pralka do prania
EP2241241A1 (de) * 2009-04-14 2010-10-20 Chemische Fabrik Dr. Weigert GmbH & Co. KG Vorrichtung zur Flüssigkeitsentnahme aus einem Behälter
RU2596106C1 (ru) 2012-09-17 2016-08-27 ЭлДжи ЭЛЕКТРОНИКС ИНК. Устройство обработки белья
US10415173B2 (en) * 2014-03-04 2019-09-17 Lg Electronics Inc. Washing machine
USD866887S1 (en) 2017-12-21 2019-11-12 Whirlpool Corporation Pedestal
USD865306S1 (en) 2017-12-21 2019-10-29 Whirlpool Corporation Laundry treating appliance door
USD899720S1 (en) 2017-12-21 2020-10-20 Whirlpool Corporation Laundry treating appliance
USD874764S1 (en) 2017-12-21 2020-02-04 Whirlpool Corporation User interface
USD848692S1 (en) 2017-12-21 2019-05-14 Whirlpool Corporation Bulk dispensing drawer
USD877431S1 (en) 2017-12-21 2020-03-03 Whirlpool Corporation User interface

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3021702A (en) * 1960-06-23 1962-02-20 Gen Electric Treating agent dispenser system for laundry machines
FR2228129B1 (it) * 1973-05-03 1977-09-02 Europe Mfg Trust
FR2475079A1 (fr) * 1980-02-01 1981-08-07 Thomson Brandt Distributeur de produit liquide, et machine a laver comportant un tel distributeur.
IT1147142B (it) * 1981-10-15 1986-11-19 Zanussi A Spa Industrie Distributore di liquidi per macchine lavabiancheria

Also Published As

Publication number Publication date
EP0096260A1 (en) 1983-12-21
DE3365605D1 (en) 1986-10-02
IT8234023V0 (it) 1982-06-09
ATE21709T1 (de) 1986-09-15

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